Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 971 [Rate centres in NPA 971] [Dial plan for NPA 971]

NXX: 539

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-539 A Dallas OR   750E ONVOY, LLC - OR 672   2026-09-12   
971-539 0 Dallas OR   750E ONVOY, LLC - OR 672   2026-09-12   
971-539 1 Dallas OR   750E ONVOY, LLC - OR 672   2026-09-12   
971-539 2 Dallas OR   157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2026-10-23   
971-539 7 Dallas OR   883K AHOI LLC 672   2026-10-29   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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